CentOS6.5升级autoconf版本，解决”Autoconf version 2.64 or higher is required“错误

版权声明：本文为博主原创文章，如需转载，必须注明原文链接及作者。安装软件时提示说需要Autoconf 2.64或更高的版本：
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[root@wslu-cs wslu]# autoconf

configure.ac:8: error: Autoconf version 2.64 or higher is required

configure.ac:8: the top level

autom4te: /usr/bin/m4 failed with exit status: 63

查询当前版本：

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[root@wslu-cs wslu]# rpm -qf /usr/bin/autoconf

autoconf-2.63-5.1.el6.noarch

卸载当前版本：

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[root@wslu-cs wslu]# rpm -e --nodeps autoconf-2.63

安装最新版本：

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[root@wslu-cs wslu]# wget ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
[root@wslu-cs wslu]# tar zxvf autoconf-2.69.tar.gz

[root@wslu-cs wslu]# cd autoconf-2.69

[root@wslu-cs wslu]# ./configure --prefix=/usr/

[root@wslu-cs wslu]# make && make install

查看当前版本：

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[root@wslu-cs autoconf-2.69]# /usr/bin/autoconf -V

autoconf (GNU Autoconf) 2.69

Copyright (C) 2010 Free Software Foundation, Inc.

License GPLv3+/Autoconf: GNU GPL version 3 or later

<http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>

This is free software: you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law.

Written by David J. MacKenzie and Akim Demaille.

至此，autoconf已升级到2.69。